How do I know which colors to use for my World Map of tectonic plate boundaries? I have the outline completed but the assignment calls for "coloring each plate and label accordingly" which are 12 geological features in all. I assume there are specific colors but how do I figure that out. The 12 features are the North American Plate, South American Plate, African Plate, Eurasian Plate, Antarctic Plate, Indian-Australian Plate, Pacific Plate, Mid-Atlantic Ridge, Ring of Fire, Himalayas, Great Barrier Reef, and Mt. Pinatubo, which I have already identified.